How do I know if I've gone insane?

You get a bag of skittles and one in the bag is malformed. If you instantly jump to a conspiracy about how the Russians have infiltrated the skittle factory to poison one skittle with polonium-210 just to target you over a facebook comment you had made about Putin, then you may be slightly insane. Unless of course you live in Russia, then you could possibly be right.

Insane people don't question their sanity.

Unsure you'd be on here!? Lol.

You won't know it. You'll probably think you're still sane. That's the scary part.

You're insane

You’ll start saying ridiculous things [b]while[/b] referring to yourself as a “stable genius”.
For example. 🤔